The SSH client must be configured to only use FIPS 140-2 approved ciphers.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-226989	GEN005510	SV-226989r603265_rule		Medium

Description
DoD information systems are required to use FIPS 140-2 approved ciphers. SSHv2 ciphers meeting this requirement are 3DES and AES. Satisfies: SRG-OS-000033, SRG-OS-000505, SRG-OS-000555

STIG	Date
Solaris 10 SPARC Security Technical Implementation Guide	2020-12-04

Details

Check Text ( C-29151r485306_chk )
Check the SSH client configuration for allowed ciphers. # grep -i ciphers /etc/ssh/ssh_config | grep -v '^#' If no lines are returned, the returned ciphers list contains any cipher not starting with 3des or aes, this is a finding.

Fix Text (F-29139r485307_fix)
Edit /etc/ssh/ssh_config and add or edit the "Ciphers" line. Only include ciphers that start with "3des" or "aes" and do not contain "cbc". For the list of available ciphers for the particular version of your software, consult the ssh_config manpage.